youtube-dl: Updated to version 2013.09.20.1

$ git alg 2013.09.16..2013.09.20.1
* 58f289d - release 2013.09.20.1
* 3d60bb9 - Add an extractor for ebaumsworld.com (closes #1462)
* 38d025b - [youtube] add algo for length 91
* c40c6aa - Catch socket.error before IOError
* 1a810f0 - [funnyordie] Fix video url extraction
* 6303759 - release 2013.09.20
*   7a878d4 - Merge pull request #1464 from patrickslin/patch-7
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| * bc4b900 - Unable to decrypt signature length 93 (fixes #1461)
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* c5e743f - [fktv] support videos splitted in any number of parts and some style changes
*   6c36d8d - Merge pull request #1438 from rzhxeo/fktv
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| * 0761d02 - Add FKTV extractor
| * 71c107f - Add FKTV extractor
* 71c8263 - [youtube] apply the fix for lists with number of videos multiple of _MAX_RESULTS to user extraction
* 2dad310 - Credit @Ruirize for newgrounds
* d0ae9e3 - [newgrounds] simplify
* a19413c - Changed file hash.
* 1ef80b5 - Fixes test fail
* eb03f4d - Added Newgrounds support
* 830dd19 - Clarify -i help (#1453)
* 1237c9a - XHamsterIE: Fix support for new HD video url format and add test (closes PR #1443)
* 5d13df7 - [francetv] Remove Pluzz test
* 6523223 - [hotnewhiphop] Fix test case title
* 4a67aaf - [youtube] Don't search the flash player version for videos with age gate activated
* f3f34c5 - release 2013.09.17
* 6ae8ee3 - Update 85 signature (Fixes #1449)
* e8f8e80 - Add an extractor for vice.com (closes #1051)
* 4dc0ff3 - [ooyala] prefer ipad url
* 4b6462f - Add an extractor for Bloomberg (closes #1436)
* c4ece78 - [ooyala] add support for more type of video urls, like m3u8 manifests.
* 7459e3a - Always correct encoding when writing to sys.stderr (Fixes #1435)

4037291e-243d-11e3-8694-f0def1836eb5
sj: kern: Use tail -F instead of tail -f to handle log rotation

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